extension IntExt on int {
  String get formatRank {
    if (this < 1000) {
      return toString();
    } else if (this < 1000000) {
      return '${_formatResult((this / 1000))}K';
    } else if (this < 1000000000) {
      return '${_formatResult(this / 1000000)}M';
    }
    return '${_formatResult(this / 1000000000)}B';
  }

  String get formatUSDString {
    return (this / 100).toStringAsFixed(2);
  }

  String _formatResult(double value) {
    value.toStringAsFixed(2);
    final String resultStr = value.toString(); //value.toStringAsFixed(2);
    final index = resultStr.lastIndexOf('.') + 3;
    String resultVlueStr = resultStr;
    if (index < resultStr.length) {
      resultVlueStr = resultStr.substring(0, index);
    }
    return resultVlueStr.endsWith('.0')
        ? value.toStringAsFixed(0)
        : resultVlueStr;
  }

  String get formatDurationFromSeconds{
    Duration duration = Duration(seconds: this);
    String twoDigits(int n) => n.toString().padLeft(2, '0');
    String minutes = twoDigits(duration.inMinutes.remainder(60));
    String seconds = twoDigits(duration.inSeconds.remainder(60));

    if (duration.inHours > 0) {
      String hours = duration.inHours.toString();
      return "$hours:$minutes:$seconds";
    } else {
      return "$minutes:$seconds";
    }
  }

}